Machine for slag-breaking.



No. 874,692. PATENTED DEC. 24, 1907.

C. G. LINDSTRAND. MACHINE FOR SLAG BREAKING.

APPLICATION IILED JULY 29, 1907.

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q vitueoo M I I M i I l o 2!! PATENTED DEC. 24, 1907.

c. e. LINDSTRAND. MACHINE FOR SLAG BREAKING.

APPLICATION FILED JULY 29. 1907.

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aywawto z CARL G. LINDSTRAND, OF BISBEE, ARIZONA TERRITORY.

MACHINE FOR SLAG-BREAKING.

No. 8i'4,692.

Specification of Letters Patent.

Patented Dec. 24, 1907.

Application filed July 29.1907. Serial No. 386.125.

To all whom it may concern:

Be it known that I, CARL G. LINDSTRAND, citizen ofthe United States, residing at Bisbee, in the county of Cochise and Territory of Arizona, have invented certain new and useful Im rovenients in Machines for SlagBreaking, 0 which the following is a specification.

This invention has for its object a simple and efficient construction of machine for slag breaking in the operation of rolling strip or sheet iron, which will produce a clean surface on the sheet or strip as it passes between the rolls, which will do away with the ordinary revolving brushes, a blast pipe being substituted therefor so as to blow off the slag after it is broken, and which will be so arranged that the iron, after passing through the slag breaking device will pass directly to the rollers, no tin-1e being lost in cleaning it and allowing it no chance to cool before bein rolled.

with these and other objects in view as will more fully appear as the description proceeds, the invention consists in certain constructions, combinations and arrangements of the parts hereinafter described and particularly pointed out in the appended claims.

For a full understanding of the invention and the merits thereof and also to acquire a knowledge of the details of construction and the means for effecting the result, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a sectional side elevation illustrating my improvements; Fig. 2 is a top planview thereof, the upper roll and blast pipe being omitted; Fig. 3 is a detail View, partly broken away of the blast pipe; and, ig. 4 is a detail perspective view of a portion of the pivoted frame.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

Referring to the drawings, the numerals 1 and 2 designate respectively the upper and lower rolls of a mill, and 3 designates the guide casing of my improved slag breaking device, said casing being mounted in any desired manner on any stationary portion of the mill frame work immediately in front of the rollers, being referably provided with a tapered end, as s own, so as to fit to some extent between the rollers. The guide casing 3 is provided with a passage 4 extending by the pivot studs or screws 9.

therethrough and through which the sheet or strip'iron 5 is fed to the rollers.

A frame is pivoted to the casing 3 at the entrance end of the same, said frame consisting of a transversely extending rod 6 and two angularly disposed arms 7 and 8 connected to the ends of the said rod, the extrcmi ties of the arms being secured to the casing 3 The arm 8 is provided with a lever extension 8 to which the handle 10 is attached, as clearly illustrated in the drawings. The rod 6 is positioned between two beams 11 and 12, the outermost beam being preferably movable in its supports or bearings, so as to make a short break for fine iron and a longer break for coarse iron. Preferably the lever extension S has a screw 13 working therein and adapted to impinge against the beam 12 at one side of the sheet or strip 5, so as to limit the movement of the rod 6 as it is pressed against the iron.

A blast nozzle 14 is supported in any desired way above the casing 8, the lower end of said nozzle or blast pipe being flattened and pointing downwardly and at a slight angle to the upper surface of the sheet or strip of iron just as the same passes into the casing 3 on its way to the rollers 1 and 2.

In the practical operation of my improved slag breaking device, the lever .comprised by the parts 8 and 10 is first raised to elevate the rod 6 so as to let the iron into the rollers. The rod 6 is then pressed down upon the strip or sheet, the latter being bent,

as clearly illustrated in the longitudinal sectional view, downwardly between the two beams 11 and 12. As the slag is thus broken by the rod 6 and beams 11 and 12, the slag will be removed from the upper surface of the sheet or strip by means of the blast pipe or nozzle 14 and the iron with a clean surface will pass directly through the casing 3 between the rollers without having a chance to cool off. Preferably the rear beam 12 is somewhat higher than the front beam. Both beams and the rod 6 are preferably made of steel.

Having thus described the invention, What is claimed as new is:

1. The herein-described slag breaking a paratus, comprising a casing adapted to e supported in front of the rollers of a mill, a frame pivotally mounted on said casing and embed pair 0 lever secured beams, and a blast no the casing adap ont of rod, a

to said frame and adapted to move the rod downwardly between towards the beams.

2. A slag brea a casing adathe rollers 01 spaced beams supported in front of said the zzle mounted above ted to direct a blast of air kingb apparatus comprisin ted to e mounted in front 0 a mill, transversely extending ing and a frame pivotally mounted on said cas ng at the front thereof and consisting of t a transversely extending rod adapted to 15 move between the beams, and two side arms connected to said rod,-one of said side arms being formed with a lever extension.

In testimonywhereof I aflix my signature in presence of two witnesses.

CARL G. LINDSTRAND. Witnesses:

J; M. BALL,

O. BLEDsoE. 

